19) except CCl3 , all others are ortho - para directing.
16) tertiary butyl benzene is formed. ( due to rearrangement )
12) except nitrobenzene, rest others.as aromatic compounds containing meta-directing do not undergo fridel crafts reaction.
( 9 ) Which of the following are ortho - para directing ?
A ) NR2
B ) Ccl3
C ) Br
D ) NHR
( 16 ) When Benzene is treated with isobutyl bromide in the presence of Alcl3
It mainly gives?????????
A ) Tertiary butyl benzene
B ) Isobutyl benzene
c ) n - butyl benzene
D ) Secondary butyl benzene
( 12 ) Among the following which can b used as a solvent in Friedel Craft's reaction
A ) Toulene
B ) Benzene
C ) Nitrobenzene
D ) Phenol
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7 Answers
1
312) phenol can be used as a solvent as it can stabilise the intermediate carbocation by the solvation effect.
111)nitrobenzene
nitrobenzene can be used as solvent as it will not interfare wid the reaction as it will not give friedel craft as it is meta diecting..so no BAD SIDE PRODUCTS AS in the oder 3......
@aieee:did u also mean wht i mean??or u mean nitrobenzene cannot be used???
3oh no... nitro benzene cant be used as a solvent bcos of its high toxic effects it is not used in labs as a solvent.it is highly carcinogenic.
